
With a (relatively) big advertising campaign SUN promoted Solaris 10 (also known as SunOS 5.10). Referring to SUN, with the "revolutionary" JAVADesktop 2 and a lot of new features and improvements, Solaris 10 should be the best OS today. Solaris is free for SPARC owners and for private use or evaluation purpose it's also freely available on the x86. While Solaris actually is kind of a legend, I thought "Hu, this could be an interesting alternative on my PC". Thought, went on and downloaded the ISOs. Read on to see how an average user (me) have experienced Solaris.
OSX is "Unix for the people".
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Some points to consider:
1) Unix is a trademark, controlled by the OpenGroup.org
2) Apple hasn't met their standards for Unix certification. Only certified companies can display the Unix trademark. For quite some time there has been a discussion between Apple and the Opengroup about trademark infringment.